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Table 1 In vitro experimental data of radiosensitization effects

From: CDK4/6 inhibitors: a novel strategy for tumor radiosensitization

Authors

CDK4/6 inhibitor

Human cell line

Efficacy with radiotherapy

Whiteway et al. [41]

Palbociclib

Medulloblastoma

(Daoy)

(ONS-76)

SF2 a ↓

SER10 b 1.6, SER50 c 1.5

SER10 2.3, SER50 2.3

Hashizume et al. [42]

Palbociclib

Intracranial ATRT d

(BT12)

(BT16)

DEF e 1.16–1.60

DEF 1.18–1.70

Whittaker et al. [43]

Palbociclib

Glioblastoma

(GBM-L1, HW1, RN1, BAH1)

Colony numbers drop to zero

Naz et al. [44]

Abemaciclib

NSCLC

(A549, H460, H820, H1975)

DMF f 1.30–1.71

Tao et al. [30]

Palbociclib and Trametinib

NSCLC

(A549, H460)

Cell survival fraction ↓

Apoptosis ↑

Huang et al. [45]

Palbociclib

HCC (Hep3B, Huh7)

CCA g (HuCCT1)

Tumor sphere numbers ↓

Colony numbers ↓

Xie et al. [46]

Palbociclib

NPC

(CNE-1)

(CNE-2)

SF2 ↓

SER 1.118–1.475

SER 1.10–1.20

Gottgens et al. [47]

Palbociclib

HNSCC

(UT-SCC-24A)

SER 1.36–1.60

Tai et al. [48]

Ribociclib

HNSCC

(OML1, OML1-R)

Colony numbers ↓

Cell viability ↓

Fernández-Aroca et al. [49]

Palbociclib

Breast cancer (MCF-7)

Lung cancer (A549)

Colorectal cancer (HCT116)

Cell survival fraction ↓

Li et al. [50]

Ribociclib and CA3

EAC h

(Flo-1 XTR)

Colony numbers ↓

  1. a SF2, survival fraction at 2 Gy
  2. b SER10, sensitizer enhancement ratio at 10% survival
  3. c SER50, sensitizer enhancement ratio at 50% survival
  4. d ATRT, atypical teratoid rhabdoid tumor
  5. e DEF, radiation dose enhancement factor
  6. f DMF, radiation dose modifying factor
  7. g CCA, cholangiocarcinoma
  8. h EAC, esophageal adenocarcinoma