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Table 1 Effect of various ITS in mice with human lymphoma xenografts

From: Immunotoxins for the Treatment of B-Cell Lymphomas

Specificity

Tumor Cells

Mice

Tumor Type

IT

Treatment

Therapeutic Effect

Reference

Anti-CD22

CA46

Nude

Solid

RFB4-PE35

Earlya

Prevents tumor growth

(25)

 

Ramos

Nude

Solid

CLB-B-ly/1-rRTA

Lateb

Temporary reduction of tumor growth

(20)

 

Ramos

SCID

Disseminated

CLB-B-ly/1-rRTA

Late

Tumor-free animals at 175 days

(20)

 

Daudi

SCID

Disseminated

RFB4-RTdgA

Early

MPT (31 → 67 days)

(28)

     

Late

MPT (26 → 54 days)

(28)

 

Daudi

SCID

Disseminated

RFB4-RTdgA + HD37-RTdgA

Early

MPT (30 → 103 days)

(29)

 

Daudi

SCID

Disseminated

RFB4-RTdgA + HD37-RTdgA +

Early

Tumor-free animals at 150 days

(30)

    

Doxorubicin

   
     

Late

MPT (30 → 120 days)

(31)

Anti-CD 19

Namalwa

SCID

Disseminated

B4-bRT

Early

ST50 from 9 → 46 days

(32)

 

(i.p.)

SCID

Disseminated

B4

Early

ST50 from 9 → 36 days

(32)

 

Nalm-6

SCID

Disseminated

B4-bRT

Late

ST50 from 25 → 30 days

(32)

 

Namalwa

SCID

Disseminated

B4-bRt

Late

ST50 from 27 → 41 days

(32)

    

B4

Late

No effect

(32)

 

Namalwa

SCID

Disseminated

B4-bRT

Late

MST from 23 → 33 days

(33)

    

B4-bRT + Doxorubicin

Late

MST from 23 → 48 days

(33)

 

Daudi

SCID

Disseminated

HD37-RTdgA

Early

MPT from 30 → 55

(29)

    

HD37-RTdgA + RFB4 [F(ab’)2]

Early

Tumor-free animals at 1 year

(27)

 

Nalm-6-UM1

SCID

Disseminated

B43-PAP

Early

38% mice, MST from 38 → 74 days

(34)

    

(high dose)

 

62% mice, MST from 38 → 210 days

(34)

    

B43-PAP + Cyclophosphamide

Early

90% mice, MST from 38 → 74 days

(35)

 

Nalm-6

SCID

Disseminated

BU12-SAP

Late

40% tumor-free animals at 110 days

(36)

  1. Abbreviations: rRTA, recombinant RTA; RTdgA, deglycosylated RTA; MPT: mean paralysis time; MST, mean survival time; ST50, survival time for 50% of animals treated or not treated with IT; PAP, pokeweed antiviral protein; SAP, Saporin; bRT, blocked ricin toxin.
  2. aEarly treatment: administration of IT 24 hr after inoculation of tumor cells.
  3. bLate treatment: administration of IT 7 or more days after inoculation of cells.