21
LYMPH NODE MESENCHYMAL STROMAL CELLS (LNMSC) REGULATE THE IMMUNE RESPONSE AGAINST LYMPHOMA F C R S DITID IRCCS and FCSR San Raffaele Division of Immunology Transplants and Infec2ous Diseases Paolo Canevali Caterina Camodeca Maria Raffaella Zocchi UNIVERSITY of PISA DEPARTMENT of PHARMACY, Elisa Nuti Armando Rossello Caterina Camodeca IRCCS AOU San Mar2noIST, UNIVERSITY of GENOA Unit of Molecular Oncology and Angiogenesis Department of Integrated Oncologic therapies Alessandra Musso Roberta Vené Alessandro Poggi Department of Pathology Annalisa Kunkl JeanLouis Rave> Laboratory of Hematology and Clinical Oncohematology Silvia Catellani Ivana Pierri Marco Gobbi Department of Oncology, Biology and Gene2cs Sara Tavella AIRC Compagnia di San Paolo [email protected] [email protected]

LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

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Page 1: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

LYMPH  NODE  MESENCHYMAL  STROMAL  CELLS  (LNMSC)    REGULATE  THE  IMMUNE  RESPONSE  AGAINST  LYMPHOMA  

F C R S

DITID-­‐  IRCCS  and  FCSR  San  Raffaele  Division of Immunology

Transplants and Infec2ous Diseases Paolo  Canevali  

Caterina  Camodeca    Maria  Raffaella  Zocchi    

 

UNIVERSITY  of  PISA  DEPARTMENT  of  PHARMACY,    

Elisa Nuti Armando Rossello Caterina  Camodeca    

   

IRCCS  AOU  San  Mar2no-­‐IST,  UNIVERSITY  of  GENOA  Unit  of  Molecular  Oncology  and  Angiogenesis  Department  of  Integrated  Oncologic  therapies  Alessandra  Musso  Roberta  Vené  Alessandro  Poggi    Department  of  Pathology  Annalisa  Kunkl  Jean-­‐Louis  Rave>    Laboratory  of  Hematology  and  Clinical  Oncohematology  Silvia  Catellani  Ivana  Pierri  Marco  Gobbi    Department  of  Oncology,  Biology  and  Gene2cs  Sara  Tavella    

   AIRC    Compagnia  di  San  Paolo  

[email protected] [email protected]

Page 2: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

Are cytotoxic T cells present in lymphomas? Infiltration of CD8+ GrzB+ cells in the interfollicular spaces of FL lymph nodes.

Laurent C et al. Blood 2011;118:5371-5379

©2011 by American Society of Hematology

Granzyme B is a prognostic marker of PFS in FL. The graph shows

progression-free survival (PFS) in the 80 patients scored by IHC after R-

combined chemotherapy.

Page 3: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

Blood,  prepublished  online  October  7,  2014;  Arne   Kolstad,   Shraddha   Kumari,   Mateusz   Walczak,   Ulf   Madsbu,   Trond   Hagtvedt,  Trond   Velde   Bogsrud,   Gunnar   Kvalheim,   Harald   Holte,   Ellen   Aurlien,   Jan   Delabie,  Anne  Tierens  and  Johanna  Olweus.    Sequen2al   intranodal   immunotherapy   induces   an2-­‐tumor   immunity   and  correlated  regression  of  disseminated  follicular  lymphoma    Scheme  of  treatment:    Low  dose  rituximab+single  dose  8Gy  radiotherapy+immature  DC+GMCSF    Key  points:  1)  Local  immunotherapy  induced  systemic  responses  in  pa\ents  with  disseminated  follicular  lymphoma    2)  Clinical  responses  correlated  with  systemic  an\-­‐tumor  T  cell  immunity.      Cumula2ve  survival      Pa2ents  with  immune  response  0.65  on  30th  month  Pa2ents  without  immune  response  0.0  on  30th  month  

Page 4: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

   

NKG2D-­‐MICA,B,  ULBP1-­‐6  CD160  -­‐HLAC  

CD16(FcγRIIIa)-­‐IgG  CD94/NKG2C,E-­‐HLAE  

CD27-­‐CD70  KIR2DS2,3,4,5,-­‐HLA-­‐C?  DNAM1-­‐PVR,  nec2n2  

KIR3DL3,  KIR2DL5A,  5B-­‐?  KIR2DS1-­‐HLA-­‐C  

CD224(SLAMF4,  2B4)-­‐CD48  SLAMF7(CS1)-­‐SLAMF7(CS1)  

NKp30  (CD337)-­‐B7H6,  BAT3,  CMVp65,  HS  

NKp80-­‐AICL  (CLE2B)  CD96-­‐NECL5  

PSGL1-­‐L-­‐selec\n  SLAMF6  (NTBA)-­‐SLAMF6  (NTBA)  

NKp44  (CD336  )-­‐viral  H6,  NKp44L(MLL5),  PCNA  ,  HS  

CD100-­‐CD72  NKp46  (CD335  )-­‐viral  H6,  HS  

NCAM  (CD56)-­‐NCAM  (CD56)  α4β1  –  FN,  VCAM1  

an2-­‐tumor    effector    lymphocytes  (NK,  NKT,  Tγδ,  CTLs)  

 tumor  

microenvironment    associated  

target    cells  as  tumor    B  cells,      

MSC    TAF,  CAF,myoF,  

 fibrocytes,  pericytes    T  and  non-­‐T  cells  MDSC,  APC,  

endothelial  cells  Treg      

LAIR1  (CD305)-­‐Collagen  I,  III,  IV,  XII  Siglec  3,7,9-­‐  sialic  acid  

KLRG1-­‐cadherin  

NKRP1A-­‐CLEC2D  (LLT1)  

CD94/NKG2A-­‐HLAE  LIR1  (ILT2,  LILRB1)-­‐HLA-­‐I  

KIR2DL1,2,3-­‐HLA-­‐C  KIR3DL1,2,3-­‐HLA-­‐A  or  B  

KIR3DL3,  KIR2DL5A,  5B-­‐?  

If  the  inhibi\ng  signal  prevails:  no    target  cell    lysis  reduced  cytokines  

produc\on  

If  the  ac\va\ng    signal  prevails:  target  cell    

lysis,    cytokine  produc\on  

   adhesion  ↑  [Ca++]i  ↑  kinases    ↑      

   adhesion  ↑  [Ca++]i  ↑  kinases    ↑      

?  

?  

CEACAM1  (CD66a)-­‐CEACAM1  (CD66a)  

LFA1-­‐ICAM1,2,3,4  

PECAM1(CD31)-­‐PECAM1(CD31)/CD38  

Page 5: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

NK,γδT, αβT cell

IFN-γ, TNF-α

Cytolysis ADCC

TCR/self-HLA-I+Ag (TAA) PD1/PDL1, CTLA-4/B7 family members NCR/B7 family members/viral products Natural Cytotoxicity Receptors (NKp30, NKp44, NKp46) NKG2D/NKG2DL as ULBP-MICA/MICB Natural Killer group 2D protein interacts with UL16 binding protein or MHC-related protein A IRS/self-HLA-I Inhibitory Superfamily Receptors (KIR, CLIR, ILT) missing self hypothesis Activating isoforms of IRS? LAIR1/collagen 2B4/CD48 DNAM1/PVR-nectin family members

Anti-tumor effector cells Natural Killer, γδT, CD8+αβT lymphocytes

Page 6: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

Lymph  node  pluripotent  MSC  CD90+CD105+CD73+  

Sox2+  CD146+  CD40+  TGII+  CL+LN-­‐  

B7-­‐1-­‐B7-­‐2-­‐  B7-­‐H1+  Erp5+,  ADAM10/17+  

   

MDSC  

FDC  

NK   Tumor    B    

CTL B

Tumor    B    

Tumor    B    

Tumor    B    

Tumor    B    

Tumor    B    

Tumor    B    

FDC  

MSC  

MSC  

Lymphoma  microenvironment  

HL  and  NHL  NKG2D-­‐NKG2DL  Erp5,  ADAM10-­‐17    NB-­‐Ps  γδ  T  cellls  

γδ  T    cells  

MSC  

ERp5 is a disulfide isomerase Disulphide bonds exchange

Release of MICA/B-ERp5 complexes

ADAM10 is a disintegrin and metalloproteinase

MICA/B ULBP4-5 ULBP 1-3, 6 α1 α1 α1 α2

α2 α2α3

TM GPI TM

α1 α2 α3

sULBPs

sMICA/B

α1 α2 α1 α2

ERp5

ERp5

sNKG2DLs bind NKG2D

Inhibiting target cell recognition

X

Mesenchymal  Stromal  Cells  

Page 7: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

NKG2DL, ERp5 and ADAM10 expression in cHL.

C

0  1  2  3  4  5  6  7  8  9  10  

mRN

A      (ΔC T)  

cHL  Stromal  areas  (n=20)  cHL  Parenchyma(n=20)  

B TG            cHL  NS  CTR          cHL  NS  

TG            cHL  MC  CTR          cHL  MC  

i   ii  

iii   iv  

0  2  4  6  8  10  

mRN

A  (ΔC T)   Healthy  LN  

Ai cHL  Nodular  Sclerosing  (NS,  n=15)  

A

0  1  2  3  4  5  6  7  8  9  10  

mRN

A      (ΔC T)  

cHL  Mixed  Cellularity  (MS,  n=9)  

Microdissec\on  

TG staining= Stroma

TG staining= Stroma

Page 8: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

0  1  2  3  4  5  6  7  8  9  

10  

mRN

A  (ΔC T)  

HL  NS  (n=14)  HL  MC  (n=10)   i  

A  HL  S  (n=10)  HL  P  (n=10)  

0  1  2  3  4  5  6  7  8  9  

10  

mRN

A  (ΔC T)  

ii  

B  

0  

2  

4  

6  

8  

10  Healthy  LN  

mRN

A  (ΔC T)  

TGFβ transcription is higher in HL than in healthy LN and is prevalent in the stromal areas

MICRODISSECTION

stromal areas are identified by

transglutaminase

Page 9: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

MIC-­‐A   ULBP3   A

ERp5   ADAM10  

i   ii  

iii   iv  

B

ERp5   ADAM10  

CTR   CD30  i   ii  

iii   iv  

NKG2DL, ERp5 and ADAM10 expression in cHL ERp5 is expressed at the tumor site both by mesenchymal stromal cells and

Reed Sternberg cells

Mesenchymal stromal cells Reed Sternberg cells

Page 10: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

100%  MFI  147  

100%  

MFI  315  

100%  

MFI  116  

100%  MFI  151  

87%  MFI  65  

90%  MFI  62  

90%  MFI  47  

100%  MFI  315  

100%  MFI  116  

97%  MFI  136  

Cell  nu

mbe

r  

Log  red  fluorescence  intensity  (a.u.)  

HLA-­‐I   CD105  CD73   CD90  

VIMENTIN   COLLAGEN      P4H   TGII   0 20 40 60 80 100

MFI  RAT

IO

B

0 5 10 15 20

MFI  RAT

IO

39%  MFI  6  

R4  

44%    MFI  27  

91%  MFI  23  

90%  MFI  25  

44%  MFI  18  Ce

ll  nu

mbe

r  

2%   8%   42%  MFI  20  

13%  

Log  red  fluorescence  intensity  (a.u.)  

ULBP1  MIC-­‐A   ULBP2   ULBP3  

CytoULBP1   CytoULBP2  

39%  MFI  9  R4  

44%    MFI  27  

91%  MFI  23  

44%  MFI  18  

CytoULBP1   CytoULBP2  

R4  

44%    MFI  27  

91%  MFI  23  

44%  MFI  18  

CytoULBP1   CytoULBP2   CytoULBP4  CytoULBP3  

ULBP4  

1%  

CytoMIC-­‐A  

i   A

0  20  40  60  80  

100  

MFI  RAT

IO   ii  

iii  iv  

i  

iii  

ii  

0  5  10  15  20  

MFI  RAT

IO  

iv  

Phenotype and NKG2DL defective expression in cultured LNMSC from cHL.

Page 11: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

NKG2DL, ERp5 and ADAM10 are expresssed in cultured LNMSC from cHL.

B

0  0.2  0.4  0.6  0.8  1  1.2  

1.4  1.6  1.8  2  2.2  

soluble  molecule  (ng/ml)  

Log  red  fluorescence  intensity  (a.u.)  

R4  

33%  MFI  10  

93%  MFI  32  

1%  1%  

R4  

Cell  nu

mbe

r  

ERp5  

CytoERp5   CytoADAM10  

ADAM  10  

A

0  2  4  6  8  10  

ERp5   ADAM10  

MFI  RAT

IO  0 2 4 6 8 10

MFI  RAT

IO

ERp5  ADAM10  

iii  

iv  

iii  

ERp5 and ADAM10 are expressed in the cytoplasm of cultured LNMSC from cHL, whereas NKG2DL are shed in the SN.

Page 12: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

A  

iv  

ii  i  

iii  

Log  red  fluorescence  intensity  (a.u.)  Log  far  red

 fluo

rescen

ce  intensity

 (a.u.)  

NKG2DPE  

CD8A

PC  

Ex-­‐vivo   +IL15  

+IL15+LNMSC   +IL15+LNMSC+αTGFβ

B  

LN              +              +                +              +  IL15          -­‐              +                +                -­‐  

LNMSC        -­‐                -­‐                +                -­‐  an\-­‐TGFβ      -­‐              -­‐                  -­‐                +  

0  25  50  75  100  125  

CD8+NKG

2D  (M

FI)  

i  

Vδ1+NKG

2D  (M

FI)  

0  25  50  75  100  125   ii  

LN              +              +                +              +  IL15          -­‐              +                +                -­‐  

LNMSC        -­‐                -­‐                +                -­‐  an\-­‐TGFβ      -­‐              -­‐                  -­‐                +  

C  

NKG

2D    m

RNA  (ΔC T)   CD8αβ  LN  cells  

Vδ1 LN cells  

0  2  4  6  8  10  

LN            +              +                +              +  IL15        -­‐              -­‐                  +              +  

LNMSC        -­‐              +                  -­‐              +  

Co-culture with LNMSC inhibits the upregulation of NKG2D induced by IL15 on γδ and αβ CD8 T cells

The inhibitory effect of LNMSC is reverted by anti-TGFβ mAbs LNMSC produce and release TGFβ

Autologous LNMSC + auto αβ or γδ T

D

0  100  200  300  400  500  

TGFβ  pg/ml   ii  

cytoTGF β

56%  

MFI  18  

LNMSC2  

Cell  nu

mbe

r   i  

Page 13: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

A  

medium  +IL15  

LNMSC+IL15  LNMSC  

0  

30  

60  90  

120  150  

12h  day    

2   4   6   8  

Vδ1  T  cells  

0  30  60  90  

120  150  180  

NKG

2D    

expressio

n  MFI  

12h  day    

2   4   6   8  

CD8  T  cells  i  

ii  

p<0.9770   C  p<0.0002  

p<0.0726  

p<0.0001  

0  

50  

100  

150  

10:1  20:1  40:1  80:1  

p<0.9770   B  p<0.0002  

p<0.0726  

p<0.0001  

Vδ1 T  cells  :  LNMSC  ra2o  

Vδ1 T  cells  only  

basal  10:1  20:1  40:1  basal      

0  

50  

100  

150  

CD8:LNMSC  ra2o  CD8  only  

10:1  20:1   40:1  80:1  

p<0.0001  p<0.0001  

p<0.0167  p<0.637  

NK

G2D

exp

ress

ion

MFI

0  

50  

100  

150  

CD8  only  

10:1  20:1   40:1  80:1  

p<0.0001  p<0.0001  

p<0.0167  p<0.637  

i  ii  

LNMSC mediated inhibition of NKG2D induced by IL15 on γδ and αβ CD8 T cells is ratio-dependent

The ratio between LNMSC and γδ or αβ CD8 T cells is important for the

inhibition of NKG2D expression

Inhibition is evident from day 4 of culture

Page 14: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

RS773   6%  MFI  24  

NKG2D  Fc  Ce

ll  nu

mbe

r  

0  10  20  30  

40  50  

%  CELL  LYSIS  

LNMSC  αNKG2D  

- -

+ -

+ +

- +

A  

*  

γδ T cells can kill RS773 lymphoma

cells expressing MIC-A

and ULBP3 via NKG2D

LNMSC inhibit the ability of γδ T cells to kill RS773 or C1R lymphoma cells

B  RS773+VPA   20%  MFI  22  

NKG2D  Fc  

Cell  nu

mbe

r  

LNMSC  αNKG2D  

- -

+ -

+ +

- +

0  

10  20  

30  40  

50  

%CE

LL  LYSIS  

*  ***  

RS773  

Surface  ADAM10  ADAM10  shedding  

ADAM10  shedding  

Yellow  square  in  B  A B

Page 15: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

Lymphoma  cell  

   Treg  cells  

FDC  mesenchymal  stromal  cell  

l  Th1    cell  

NHL lymphoma microenvironment

Lymph  node  

Rela\ve  mRN

A  expressio

n  

0  

2  

4  

6  

8  

10  

12  

14  

TGFbeta   IL10   IFNgamma   TNFalpha  

Serie1  

Serie2  

Lymphomas  non  neoplas\c  LN  

IFNγ  TNFα  

IL10  TGFβ  

Page 16: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …
Page 17: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

Differentiation potential of LNMSC (alizarin: bone; oil red: adipocytes)

LN1 LN2 LN3 LN4 LN5 LN6 LN7 LNMSC expressed some characteristics of stem cells

Surface markers

NEG HLAI

ICAM1 CD146 CD90

CD73 CD105

PVR

Log Fluorescence intensity (a.u.)

Cell

num

ber

Cytoplasmic markers

NEG Collagen P4H

NEG ALP BSP Osteocalcin

Vimentin

Log Fluorescence intensity (a.u.)

Cell

num

ber

Page 18: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

ACETYL-CoA CoA-SH

Acetoacetyl-CoA

Acetil-CoA

HYDROXYMETHYL GLUTARYL- COA

MEVALONATE 2NADPH+2H

2NADP+CoA-SH

5-Pyrophosphomevalonate

Dimethylallyl pyrophosphate

Geranyl pyrophosphate

Farnesyl pyrophosphate

Squalene

Squalene 2,3 epoxide Lanosterol CHOLESTEROL

Farnesyl pyrophosphate

+NADPH+H

2PPi+NADP

O2+NADPH+H

H2O+NADP

Isopentenyl pyrophosphate

PPi

Isopentenyl pyrophosphate

PPi

ATP ADP

ATP

ADP

ATP

ADP+Pi+CO2

Cholesterol synthesis fluvastatin

CoA-SH

geranylgeranyl pyrophosphate

Heme A, Dolichol,

Ubiquinon

Prenylated proteins (Rho,

Ras GTP-binding proteins

HMG-CoA reductase

Bisphosphonates

Zoledronic acid

19 reactions

Manumycin A, FTI and GTI inhibitors

ACAT-1,2 inhibitors (Avasimibe, K604,

Pyripyropene)

Acyl-CHOLESTEROL

Page 19: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

TGFβ  pg/ml/1

06  cellsl  

i  

0  

50  

100  

150  

200  C  

ii  

IL15  pg/ml/1

06  cells  

0  

40  

60  

80  100  

20  

*   *  

IL15

LNMSC  

mRN

A      (ΔC T)  

0  2  4  6  8  10  12   *    

B  

-­‐  -­‐  -­‐  

-­‐  -­‐  +  

+  +  -­‐  

+  -­‐  +  

-­‐  +  -­‐  

Vδ2  Pam5  Zol1  

+  -­‐  -­‐  

TGFβ

-­‐  -­‐  -­‐  

-­‐  -­‐  +  

+  +  -­‐  

+  -­‐  +  

-­‐  +  -­‐  

Vδ2  Pam5  Zol1  

+  -­‐  -­‐  

**  mRN

A      (ΔC T)   *  

0  2  4  6  8  10  12   A  LNMSC

*  

IL10

*   **  

mRN

A      (ΔC T)  

0  

2  4  

6  8  

10  

12   D  

-­‐  -­‐  -­‐  

-­‐  -­‐  +  

+  +  -­‐  

+  -­‐  +  

-­‐  +  -­‐  

LNMSC  Pam5  Zol1  

+  -­‐  -­‐  

Vδ2  *  

TNFα

mRN

A      (ΔC T)  

0  

2  4  

6  8  

10  

12   E  Vδ2  

-­‐  -­‐  -­‐  

-­‐  -­‐  +  

+  +  -­‐  

+  -­‐  +  

-­‐  +  -­‐  

LNMSC  Pam5  Zol1  

+  -­‐  -­‐  

*  IFNγ

mRN

A      (ΔC T)  

0  

2  4  

6  8  

10  

12   F  

-­‐  -­‐  -­‐  

-­‐  -­‐  +  

+  +  -­‐  

+  -­‐  +  

-­‐  +  -­‐  

LNMSC  Pam5  Zol1  

+  -­‐  -­‐  

Vδ2  

LNMSC   LNMSC  

N-BPs prevent TGFβ and enhance IL15 production in LNMSC…

…reduce IL10 and stimulate TNFα or IFNγ in Vδ2 T lymphocytes

H  

TNFα

pg/ml/1

06  cells   **  

Vδ2   I  

IFNγ pg/m

l/106  cells  

0  

200  

300  

400  

500  

100  

Vδ2  

+LNMSC  

*  

+LNMSC  

**  

0  

200  

300  

400  

500  

100  

Page 20: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

vs  P815

**  

%  Cytotoxicity

 

*  

0  

10  

20  

30  

40  

50  

60   *  

Vδ2  E:T  10:1 Vδ2+LNMSC A  

-­‐  -­‐  -­‐  -­‐  

 NKG2D  CD16  Pam5  Zol1  

 +  -­‐  -­‐  -­‐  

 +  -­‐  -­‐  -­‐  

 +  -­‐  -­‐  +  

 -­‐  +  -­‐  -­‐  

 -­‐  +  -­‐  -­‐  

-­‐  -­‐  -­‐  -­‐  

 +  -­‐  +  -­‐  

 +  -­‐  +  -­‐  

 +  -­‐  -­‐  +  

***  

B   vs  C1R

 -­‐  -­‐  -­‐  

 -­‐  +  -­‐  

%  Cytotoxicity

 

0  10  20  30  40  50  

60  

*  

*  

Vδ2  E:T  10:1 Vδ2+LNMSC

 RTX  Pam5  Zol1  

-­‐  -­‐  -­‐  

-­‐  +  -­‐  

+  -­‐  -­‐  

+  -­‐  -­‐  

-­‐  -­‐  +  

-­‐  -­‐  +  

i

vs  C1R-­‐MICA

%  Cytotoxicity

 

0  10  20  30  40  50  

60  

**  

Vδ2  E:T  10:1 Vδ2+LNMSC

*  

*  

 RTX  Pam5  Zol1  

-­‐  -­‐  -­‐  

-­‐  -­‐  -­‐  

+  -­‐  -­‐  

+  -­‐  -­‐  

-­‐  -­‐  +  

-­‐  +  -­‐  

-­‐  +  -­‐  

-­‐  -­‐  +  

ii

LNMSC  Pam5  Zol1  

+  -­‐  -­‐    

-­‐  -­‐  -­‐      

NKG

2D  m

RNA      (ΔC T)  

0  2  4  6  8  10  

+  +  -­‐      

12  

+  -­‐  +      

Vδ2

*  

C  **  

D  

NKG2D

Med

ium

 

+  Pam5  

+  Zol1  

NKG2D

CD16

NKG2D

Neg  Ctr Vδ2  +LNMSC  Vδ2

Med

ium

 

i

γδ  T    N

KG2D

+  (MFI)  

0  25  50  75  100  125  

LNMSC        -­‐            +          +          +      +  

an\-­‐TGFβ      -­‐              -­‐            -­‐            -­‐      +  

*

**

Pam5          -­‐              -­‐          +          -­‐          -­‐  Zol1          -­‐              -­‐            -­‐          +        -­‐  

ii Ce

ll  nu

mbe

r  

Log  green  fluo  intensity  (a.u.)  

Page 21: LYMPHNODE&MESENCHYMAL&STROMAL&CELLS&(LNMSC)&& …

ADAM10    inhibitors  

MSC    B7-­‐H1  PD-­‐L1  

X  

NKG2DL  

 TGFβ,  IDO  and  PGE2  synthesis  inhibitors  

 Inac\va\on/elimina\on    

 of  MSC  by  ADCC  or  CDC  triggered  with    an\body  specific    

to  lymphoma-­‐associated  MSC  markers    

An\body  to  B7-­‐H1  (PD-­‐L1)  to  avoid    inhibi\on  of  T  cells  upon  the    

interac\on  with  the  nega\ve  regulator  PD1    

Inac2va2on  of  ADAM10  to  reduce    the  release  of  NKG2DL  

     

 an\-­‐  PD-­‐L1  ab  

TGFβ  

IDO  

PGE2  

MSC  

N-­‐BPs  zoledrobnate  

TGFβ  IDO  

PGE2  

IL15  

TGFβ  IDO  

PGE2  IL15  

Priming  with  N-­‐BPs  Iden2fica2on  of  other  drugs  to  shic  immunosuppression    

to  immune  s2mula2on  (induc2on  of  CD277  (BTN3A1)  expression  to  trigger  

Vδ2+  T  cells)  

A  

B  

ADAM10  

CTL PD-­‐1  

FcγR+  effector  cell    

an\-­‐MSC  Ab